Thanks for the kind words!
The system should already fill empty turrets — the default threshold is 5, which means any turret with fewer than 5 rounds (including 0) triggers a refill. So freshly placed empty turrets are covered.
If you're seeing empty turrets not getting filled, here's a quick checklist:
- Press Alt+G — auto-defense must be enabled (you'll see a confirmation message)
- Press Alt+N — make sure the turrets are inside the green square (nanobot working area)
- Make sure you have compatible ammo in your inventory (not just in the nano-emitter slot — regular ammo like magazines, piercing rounds, etc.)
- The nano-emitter must be loaded with Nano Constructors (not termites)
- Check Settings → Per Player → Gun Turret Threshold — default "5" means refill when below 5 rounds
Also note: the system scans a few turrets per tick (default 5), so if you place a big blueprint with many turrets, it takes a few seconds to get to all of them. You can increase "Max Per Scan" in global settings to speed this up.
Also, many common questions are already covered on the FAQ page: https://mods.factorio.com/mod/Nanobots3/faq
Let me know if it's still not working after checking these — I can help troubleshoot further!